CN101697589A - Digital broadcasting system and data processing method thereof - Google Patents
Digital broadcasting system and data processing method thereof Download PDFInfo
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- CN101697589A CN101697589A CN200910205859A CN200910205859A CN101697589A CN 101697589 A CN101697589 A CN 101697589A CN 200910205859 A CN200910205859 A CN 200910205859A CN 200910205859 A CN200910205859 A CN 200910205859A CN 101697589 A CN101697589 A CN 101697589A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2368—Multiplexing of audio and video streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4341—Demultiplexing of audio and video streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/02—Arrangements for relaying broadcast information
- H04H20/06—Arrangements for relaying broadcast information among broadcast stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Abstract
A digital broadcasting system and a data processing method thereof are provided. An apparatus for generating a transport stream includes a packet generator for generating a plurality of packets by compressing video and audio signals; a counter for counting the number of the generated packets and outputting the count result; and an information controller for determining whether the count result of counting reaches a predetermined number of packets, inserting packet start information into the packets according to the count result, and transmitting the packets with the packet start information inserted therein. The packet start information is added to a packet to be transmitted in a transmitter, and the packet start information is extracted from the received packet in a receiver, so that the waste of frequency resources can be reduced.
Description
The application is to be on March 30th, 2007 applying date, and application number is 200780010887.0, and exercise question is divided an application for " digit broadcasting system and data processing method thereof " patent application.
Technical field
The present invention relates to a kind of digit broadcasting system and data processing method thereof, more particularly, relate to a kind of digit broadcasting system and data processing method that can reduce the waste of frequency resource by the effective transmission and the reception of bag.
Background technology
Recently, the type of TV (TV) broadcasting is changed into numeral from simulation suddenly, and broadcast system (for example the PerfecTV of the DirecTV of the Koreaset of Korea S, the U.S., Japan etc.) has adopted Digital Television (DTV) system.In terrestrial broadcasting, the DVB (digital video broadcasting) in ATV of the U.S. (advanced TV) and Europe has promoted digital TV broadcasting apace.
The processing that Fig. 1 illustrates general digital TV broadcasting system and TV broadcasting sent to the base station from the broadcasting station.With reference to Fig. 1, digital TV broadcasting system 100 comprises at least one broadcasting station 110 and a plurality of base station 120A-120N that arrange in distinct coverage region.Broadcasting station 110 uses the modulator (not shown)s by the vision signal that for example obtains by camera and microphone respectively and audio signal compression and packing being produced the broadcast singal of packet form, and by transmission channel (for example, optical cable or wireless mode) transmission broadcast packet.Arrangement can lay respectively at each base station 120A-120N of national different piece with receiving broadcast signal, thereby handles the broadcast singal that receives.Each base station operated by rotary motion has the transceiver (that is, transmitter and receiver) that can send with receiving broadcast signal.
In this case, broadcast packet is by order transmission one by one.The transmitter that is installed in each base station is the broadcast packets of processed in units 110 transmissions from the broadcasting station with the frame, and the broadcast packet of handling is sent to the radio receiver (for example, TV receiver) that belongs to the scheduled broadcast zone.Here, each base station 120A-120N has the fixedly range of transmission that can send broadcast singal respectively.
This broadcast packet or frame can be provided with different forms.When producing frame in the transmitter of each base station 120A-120N, transmitter forms frame by the broadcast packet of accumulation transmission in succession.Yet if transmitter is in " cutting out " state, although broadcast packet 110 is sent from the broadcasting station, transmitter can not receive broadcast packet.When transmitter was converted into " opening ", the broadcast packet by accumulative reception formed frame.Therefore, each base station 120A-120N can receive broadcast packet with different orders according to " opening/closing " state of transmitter, and in this case, for each base station 120A-120N, being included in a broadcast packet in the frame can be different.
Because the transmitter of each base station 120A-120N receives broadcast packet with different orders, by the frame difference of each base station 120A-120N formation.Therefore, receiving the zone of same broadcast signal, between broadcast singal, may disturb from two or more base station 120A-120N.Consequently, at radio receiver, broadcast singal may not can be received.
In order to prevent such interference, each base station 120A-120N uses independent channel, promptly different frequencies usually.Under the situation of using single frequency, prevent that the overlapping method of communication range of each base station 120A-120N is used, received by two or more base station 120A-120N to prevent broadcast singal.Yet, use at each base station 120A-120N under the situation of independent channel, may waste frequency resource.In addition, under the overlapping situation of the communication range that prevents each base station, the zone that radio receiver can not receive any broadcast singal from each base station 120A-120N can take place inevitably.
Therefore, need a kind of new technology to come by making each base station 120A-120N use identical channel to prevent the waste of frequency resource, and prevent any zone that can not receive broadcast singal.
Summary of the invention
Technical problem
Several aspect of the present invention and exemplary embodiment provide a kind of digit broadcasting system and data processing method thereof, and this system and method can reduce the waste of frequency resource and make the user convenient by using packet start information to send/receive bag.
Technical scheme
According to embodiments of the invention, provide a kind of being used to produce the equipment that transmits stream, comprising: the packet generation device produces a plurality of bags; Counter is arranged with to the number count of the bag that produces and count value is provided; Controller is arranged packet start information to be inserted wrapped to determine whether described count value reaches the predetermined quantity of bag, and is sent the bag that wherein is inserted with packet start information to transmit stream.
According to a further aspect in the invention, provide a kind of data processing method that is used to transmit the miscarriage generating apparatus, comprising: produce a plurality of bags by compressed video and audio signal; Quantity to the bag that produces is counted, and count value is provided; Determine whether described count value reaches the predetermined quantity of bag, packet start information is inserted bag, and send the bag that wherein is inserted with packet start information to transmit stream according to described count value.
In another aspect of this invention, provide a kind of digital broadcast transmission apparatus, comprising: the unit is set synchronously, arranges clock synchronization with the transmission stream that is provided for sending packet form; The frame generator is arranged whether to have inserted next bag after the bag in a plurality of bags of reception with the packet start information that begins to wrap of determining the indication frame, and is determined to produce frame based on this.
In another aspect of this invention, provide a kind of data processing method that is used for digital broadcast transmission apparatus, comprising: the clock synchronization that is provided for sending the transmission stream of packet form; Whether arrangement has inserted next bag after the bag in a plurality of bags of reception with the packet start information that begins to wrap of determining the indication frame, and determines to produce frame based on this.
In another aspect of this invention, provide a kind of digit broadcasting system, comprising: multiplexer produces a plurality of bags by compressed video and audio signal, and produces the information about the order of described a plurality of bags; Digital broadcast transmitter receives a plurality of bags and about the information of the order of described a plurality of bags from multiplexer, and according to the described a plurality of bags of described sequential processes.
In another aspect of this invention, provide a kind of data processing method that is used for digit broadcasting system, comprising: produce a plurality of bags by compressed video and audio signal; Generation is about the information of the order of described a plurality of bags; Send to transmitter with described a plurality of bags with about the information of the order of described a plurality of bags.
Except above-mentioned exemplary embodiment and aspect, aspect and embodiment will be clearly by the reference accompanying drawing and by learning following description in addition.
Technique effect
As mentioned above, according to the present invention, if frequency resource does not reduce, by packet start information being added to the bag that will be sent out at transmitter, and, can save frequency resource and can eliminate waste by from the bag that receives, extracting packet start information and handle this packet start information at receiver.
Various assemblies as Fig. 2 and digit broadcasting system shown in Figure 6 can be realized with hardware (for example, application-specific integrated circuit (ASIC) (ASIC)); Yet, can utilize appropriate software, hardware or its combination.Specifically, can write software module by various software languages (comprising C, C++, Java, Visual Basic etc.).These modules can comprise data and instruction, these data and instruction also can be stored in one or more machinable mediums (for example, dynamic or static RAM (DRAM or SRAM), Erasable Programmable Read Only Memory EPROM (EPROM), Electrically Erasable Read Only Memory (EEPROM) and flash memory); Disk (for example, fixed disk, floppy disk and removable dish); Other magnetizing mediums (comprising tape); And on the optical medium (for example, compact disk (CD) or digital video disc (DVD)).The instruction of software program or module also can load or be sent to unruled card or any calculation element on the wireless network with one of many different modes.For example, the code segment that comprises instruction that is stored on floppy disk, CD or dvd media, the hard disk or transmits by network interface unit, modulator-demodulator or other interface arrangements can be logged into system, and is performed as corresponding software programs or module.Handle loading or transmit, the data-signal that is embodied as (by transmission such as telephone wire, netting twine, Radio Link, cables) carrier wave can be transferred to the code segment that comprises instruction network node or element.This carrier wave can be the form of the signal of the signal of telecommunication, optics audible signal, electromagnetic signal or other types.
Description of drawings
The processing that Fig. 1 illustrates general digital TV broadcasting system and the TV program is sent to the base station from the broadcasting station;
Fig. 2 is the block diagram according to exemplary transmission stream (TS) structural unit of the embodiment of the invention;
Fig. 3 illustrates the structure according to the exemplary dual transport stream of the embodiment of the invention;
Fig. 4 is the flow chart of method that is used to operate multiplexer according to the embodiment of the invention;
Fig. 5 illustrates the example data frame according to the digit broadcasting system of ATSC VSB type according to the embodiment of the invention;
Fig. 6 is the block diagram that illustrates according to the structure of the exemplary digital broadcast transmission device of the embodiment of the invention;
Fig. 7 is the flow chart according to the method that is used for operand word broadcast transmission device of the embodiment of the invention.
Embodiment
Now, in detail with reference to embodiments of the invention, its example represents that in the accompanying drawings wherein, identical label is represented identical parts all the time.Below by embodiment being described with reference to the drawings to explain the present invention.
According to the digit broadcasting system of the embodiment of the invention, the broadcasting station is equipped with the multiplexer of broadcast packet, and the base station is equipped with transceiver (that is, transmitter and receiver) separately.When the broadcasting station that is provided with multiplexer sent to the base station that is provided with transmitter respectively with broadcast packet, multiplexer and transmitter were shared the information that begins to wrap that begins about the indication frame, thereby the transmitter of each base station forms same number of frames.
In surface wave Digital Television (DTV) broadcast system, can use dual transport stream (TS) according to U.S. of ATSC (Advanced Television Systems Committee) VSB (residual sideband) standard.This dual transport stream (TS) comprises normal stream and turbo stream.
Forward Fig. 2 now to, show the block diagram of exemplary transmission stream (TS) structural unit that is used to produce dual transport stream (TS) according to the embodiment of the invention.With reference to Fig. 2, TS structural unit 200 comprises RS (Reed-Solomon) encoder 210, place holder maker 220, interleaver and TS multiplexer 240.For the purpose of simplifying, can omit RS encoder 210 and interleaver 230, and can change the position of RS encoder 210 and interleaver 230.
Receive normal stream and turbo stream at TS construction unit 200.In this case, normal stream is directly inputted to the TS multiplexer, and turbo stream is imported into TS multiplexer 240 by RS encoder 210, place holder maker 220 and interleaver 230.The RS encoder adds parity check to turbo stream, and place holder maker 220 produces the parity check insertion district that is used for parity check to be added is inserted into turbo stream.
Interleaver 230 will interweave from the turbo stream that place holder maker 220 receives.TS multiplexer 240 multiplexing normal stream and turbo stream make up dual transport stream (TS).Subsequently, TS multiplexer 240 produces broadcast packet by dual transport stream (TS) packing that will make up.TS multiplexer 240 comprises packet generation device 241, counter 243 and information controller 245.Packet generation device 241 forms dual transport stream (TS) by combination normal stream and turbo stream, and comes dual transport stream (TS) is packed with the form of bag.
Fig. 3 illustrates the structure according to the exemplary dual transport stream (TS) of the embodiment of the invention.With reference to Fig. 3 explain the structure and the operation of multiplexer 240 thereafter.
With reference to Fig. 3, in dual transport stream (TS), turbo stream has 78 bags of 312 sections bag of a field of inserting dual transport stream.Dual transport stream (TS) is so made up: according to four bags with a bag (188 byte) of 1: 3 ratio repeated arrangement turbo stream and three bags (188 byte) of normal stream.Under situation about inserting at the turbo of 70 bags stream in 312 sections of dual transport stream (TS), dual transport stream (TS) is so made up: four that comprise (with 1: 3 a ratio) bag (188 byte) of turbo stream and three bags (188 byte) of normal stream are wrapped repetition 70 times.
Refer back to Fig. 2, the quantity of dual transport stream (TS) bag that 243 pairs of packet generation devices of counter 241 form is counted, and the result of output counting.
If the count results that receives from counter 243 reaches the predetermined quantity of formation according to the bag of the predetermined a plurality of frames of standard of digit broadcasting system, then information controller 245 adds packet start information to bag when count results reaches the predetermined quantity of bag, and sends the bag that is added with packet start information.The bag that is added with packet start information is called as VFIP (VSB frame initial package).
Specifically, with reference to Fig. 3, information controller 245 adds packet start information the head of the bag that comprises 3 bytes to, and the bag that will have a packet start information sends to base station (for example as shown in Figure 1).In this case, preferably, with packet start information interpolation Packet Identifier (PID) zone to the end.Here, to represent to indicate next bag of the bag that is added with packet start information be the information that forms first bag of frame to packet start information.
If the count results that receives from counter 243 is not equal to the predetermined quantity of bag, then information controller 245 in statu quo sends the dual transport stream packet that packet generation device 241 forms.Just, when count results was not equal to the predetermined quantity of bag, information controller 245 did not add packet start information to bag, and will send to base station (for example as shown in Figure 1) from the dual transport stream packet of packet generation device 241 outputs.
Fig. 4 provides the flow chart of method that is used to operate multiplexer that is used to explain according to the embodiment of the invention, and Fig. 5 illustrates the example frame that the ATSC VSB type transmitter by in the digit broadcasting system according to the embodiment of the invention forms.
With reference to Fig. 4 and Fig. 5, at step S410, be included in packet generation device 241 in the TS multiplexer 240 by the combination of normal stream and turbo stream is formed dual transport stream (TS), in this case, dual transport stream (TS) is the form of bag.Just, packet generation device 241 produces dual transport stream (TS) by the normal stream and the turbo stream of multiplexing input, and provides dual transport stream (TS) with the form of bag.
Subsequently, at operation S420,243 pairs of dual transport stream packet of counter are counted, and the output count results.Subsequently, at operation S430, information controller 245 determines whether count results reaches the predetermined quantity of formation according to the bag of the predetermined a plurality of frames of the standard of digit broadcasting system.
If count results reaches the predetermined quantity of bag, then packet start information is added to the head of bag at operation S440 information controller 245.The bag that is added with packet start information is called as VFIP (VSB frame initial package).Here, packet start information represent to indicate next bag of the bag that is added with packet start information be configuration frame first the bag information.
Specifically, as shown in Figure 5, each frame of bag comprises two, and each comprises a field synchronization segments and 312 data segments as first section.Under the situation that per 20 frames interpolation packet start information is set, for example, when when operation S420 count results reaches predetermined quantity (for example, 12,480), information controller 345 adds packet start information on the head of bag.Here, 12,480 expressions except field synchronization segments with the quantity of the corresponding bag of 20 frames.
Just, the frame except field synchronization segments comprises 624 bags, and 20 frames comprise the individual bag in 12,480 (=624 * 20).It is that the packet start information that begins to wrap that constitutes next frame is added the head of last bag (that is, the 12nd, 480 of the 20th frame the wrapping) to that information controller 245 will be indicated next bag (that is the 12nd, 481 bag).Subsequently, at operation S450, the information controller 245 that is included in as shown in Figure 2 in the TS multiplexer 240 sends to base station (for example as shown in Figure 1) with bag.
Specifically, if count results reaches the predetermined quantity of bag, then information controller 245 sends to the base station with VFIP (that is, being added with the bag of packet start information at operation S440).If count results does not also reach the predetermined quantity of bag, the information controller 245 that then is included in the TS multiplexer 240 in statu quo sends the dual transport stream packet that packet generation device 241 produces.Just, do not reach for count results under the predetermined quantity situation of bag bag (promptly, this bag is not VFIP), the information controller 245 that is included in the TS multiplexer 240 will send to base station (for example as shown in Figure 1) in the dual transport stream packet of operation S410 output.
On the other hand, in TS multiplexer 240, be used for adding packet start information the head of bag to or the information controller 245 that is used to make up a plurality of frames of the bag with predetermined quantity only is exemplary, the invention is not restricted to this according to the embodiment of the invention.The predetermined quantity whether package informatin controller 245 equals to wrap according to count results, and no matter be to add packet start information to bag with a frame unit or a unit.In addition, in TS multiplexer 240 according to the present invention, the packet start information of adding the head of bag to also can be applied to single transport stream packet.
Forward Fig. 6 now to, the structure according to the exemplary digital broadcast transmission device of the embodiment of the invention is shown.With reference to Fig. 6, digital broadcast transmitter 600 comprises randomizer 610, RS encoder 620, interleaver 630, trellis encoder 640, multiplexer 650 and modulator 660.Yet,, can omit RS encoder 620 and interleaver 630, and can change the position of RS encoder 620 and interleaver 630 for simple succinct purpose.
Randomizer 610 is with dual transport stream (TS) randomization.Here, obtain to be input to the dual transport stream (TS) of randomizer 610 by multiplexing normal stream and trubo stream, this dual transport stream (TS) comprises the parity area that is used to add parity check.
Interleaver 630 will interweave from the dual transport stream (TS) of RS encoder 620 inputs.Here, term " interweaves " and is not meant the change of data, but index is according to the position change in Frame.
Dual transport stream (TS) grid coding that 640 pairs of interleavers 630 of trellis encoder interweave, and the dual transport stream (TS) of this grid coding sent to bag buffer (not shown), the dual transport stream (TS) that receives with interim storage.
Specifically, transmission/reception period at dual transport stream (TS), unit 651 is set synchronously receives the time synchronizing signal of predetermined bit by artificial satellite, and based on the clock synchronization of the multiplexer 650 of the TS multiplexer 240 of time synchronizing signal setting TS construction unit 200 as shown in Figure 2 and digital broadcast transmitter as shown in Figure 6 600.
If unit 651 is set synchronously clock synchronization is set, then frame generator 653 determines whether dual transport stream (TS) bag that receives is VFIP, and exports this definite result.Here, VFIP is the bag that is added with packet start information, and indicate next bag be configuration frame first the bag.
Specifically, if stream is not VFIP, then frame generator 653 abandons the dual transport stream (TS) of reception, and if stream is VFIP, then produce frame by the bag that is integrated into the predetermined quantity that receives after the VFIP.In this case, frame generator 653 determines by detecting the packet start information that has the head that does not still have the bag that adds reception to whether the bag that receives is VFIP.
In addition, frame generator 653 is by making up frame with gathering up to the bag of the predetermined quantity of the bag that receives next VFIP after the VFIP.In this case, if initially receiving VFIP after the VFIP, then frame generator 653 wraps the VFIP of reception as checking, and regenerates frame by verifying that the bag that wraps the predetermined quantity that receives is afterwards gathered.
660 pairs of multiplexers of modulator, 650 multiplexing dual transport stream (TS) are carried out Channel Modulation, (TS) flowed in the transmission of modulation be converted to the RF channel band signal to send the RF channel band signal of conversion via transmission channel.
Fig. 7 is the flow chart of explaining according to the method that is used for operand word broadcast transmission device of the embodiment of the invention.With reference to Fig. 7, at operation S710, be provided with synchronously unit 651 be provided with as shown in Figure 2 TS construction unit 200 and the clock synchronization of digital broadcast transmitter as shown in Figure 6 600.
Specifically, transmission/reception period in dual transport stream, unit 651 is set synchronously receives the time synchronizing signal of predetermined bit by artificial satellite, and based on the clock synchronization of the multiplexer 650 of the TS multiplexer 240 of time synchronizing signal setting TS construction unit 200 as shown in Figure 2 and digital broadcast transmitter as shown in Figure 6 600.
If clock synchronization is set up, then at operation S720, frame generator 653 determines whether the dual transport stream (TS) that receives is VFIP.Here, VFIP is the bag that is added with packet start information, and indicate next bag be configuration frame first the bag.
Specifically, frame generator 653 determines by detecting the packet start information that exists in the head that does not still have the bag that adds reception to whether the dual transport stream (TS) that receives is VFIP.Just, if packet start information has been added the head of bag to, then frame generator 653 determines that the bag that receives is VFIP, otherwise determines that then the bag that receives is to be not the bag of VFIP.
If the bag that receives is VFIP, then at operation S730, frame generator 653 produces frame by gathering from first bag of unwrapping the predetermined quantity of beginning that receives after VFIP.In this case, preferably, except field synchronization segments, a frame comprises 624 bags.Frame generator 653 produces frame by 624 bags that receive after the set VFIP, produces frame by gathering 624 continuous bags subsequently.Here, to be set to 624 be for example to the quantity that constitutes the bag of a frame.Yet this only is exemplary, the invention is not restricted to this.
Subsequently, at operation S740, frame generator 653 determines whether to receive the checking bag.Here, the checking bag is the VFIP that frame generator 653 receives after receiving VFIP for the first time.If receive the checking bag, then at operation S750, frame generator 653 verifies that by the quantity that checks the bag of gathering frame is to produce frame.For example, if frame comprises 624 bags, then frame generator 653 checks whether gathered 624 bags that comprise the checking bag.If gathered 624 bags, then frame generator 653 determines that these frames are correctly made up, and continues to produce frame.
If gather 624 bags, then frame generator 653 abandons institute's frame that is useful on and produces and the bag of set, and wraps by 624 of reception after being integrated into the checking bag at operation S760 and to produce frame again.On the contrary, if the bag that receives at operation S720 is not VFIP, then abandon the bag of reception at operation S770 frame generator 653.
On the other hand, in digital broadcast transmitter and signal processing method thereof, also may be used on single transport stream packet whether being that the VFIP that is added with packet start information wraps and produces frame by the bag that determine to receive.
Although illustrated and described exemplary embodiment of the present invention, it will be apparent to one skilled in the art that under the situation that does not break away from true scope of the present invention, can carry out various changes and modification, and replaceable its element of equivalent.Without departing from the scope of the invention, many modifications, change, interpolation and replacement can be carried out so that instruction of the present invention is fit to particular case.Therefore, the invention is not restricted to disclosed various exemplary embodiment, and the present invention includes all embodiment within the scope of the claims.
Claims (14)
1. digital broadcast transmitter comprises:
Counter is counted transport stream packet;
Information controller, whether the quantity of the transport stream packet of definite counting is identical with predetermined quantity, and insert packet start information according to the result who determines.
2. digital broadcast transmitter as claimed in claim 1, wherein, under the quantity of the transport stream packet of the counting situation identical with predetermined quantity, information controller inserts packet start information on the head of bag.
3. digital broadcast transmitter as claimed in claim 1, wherein, the position that begins to wrap of the frame of packet start information indication in the unit of a plurality of frames.
4. digital broadcast transmitter as claimed in claim 3, wherein, packet start information is included in and begins to wrap in the bag of adjacent arrangement before.
5. digit broadcasting system comprises:
Digital broadcast transmitter is counted transport stream packet, and inserts the packet start information of indicating the position that begins to wrap according to the result of counting;
Digit broadcasting receiver receives transmission stream from digital broadcast transmitter, and reads packet start information from described transmission stream, and handles this packet start information.
6. digit broadcasting system as claimed in claim 5, wherein, digital broadcast transmitter comprises:
Counter is counted transport stream packet;
Information controller, whether the quantity of the transport stream packet of definite counting is identical with predetermined quantity, and the packet start information insertion is wrapped under the quantity of the transport stream packet of the counting situation identical with predetermined quantity according to the result who determines.
7. digital broadcast transmitter comprises:
Reed-solomon RS encoder is carried out the RS coding to the supplementary data stream in the transport stream that comprises supplementary data stream and common data stream;
Interleaver, the supplementary data stream that RS is encoded interweaves;
Multiplexer so makes up transport stream: the predetermined bag in the supplementary data stream is placed on predetermined portions in the frame.
8. digital broadcast transmitter as claimed in claim 7, wherein, multiplexer so makes up transport stream: the package that quilt is cut apart with the bag with predetermined quantity is repeated, and the supplementary data stream bag that is placed on the predetermined portions in this group is placed on the predetermined portions of this frame.
9. digital broadcast transmitter as claimed in claim 8, wherein, multiplexer so makes up transport stream: the supplementary data stream bag that is placed on the predetermined portions of this group is placed on first bag of this frame.
10. digital broadcast transmitter as claimed in claim 8, wherein, multiplexer so makes up transport stream: the supplementary data stream bag that is placed on the predetermined portions of this group is placed on first bag of the field that constitutes this frame.
11. a method for stream processing that is used for digital broadcast transmitter comprises:
Supplementary data stream in the transport stream that comprises supplementary data stream and common data stream is carried out the RS coding;
Supplementary data stream to the RS coding interweaves;
So make up transport stream: the predetermined bag in the supplementary data stream is placed on predetermined portions in the frame.
12. method for stream processing as claimed in claim 11, wherein, construction step so makes up transport stream: the package that quilt is cut apart with the bag with predetermined quantity is repeated, and the supplementary data stream bag that is placed on the predetermined portions in this group is placed on the predetermined portions of this frame.
13. method for stream processing as claimed in claim 12, wherein, construction step so makes up transport stream: the supplementary data stream bag that is placed on the predetermined portions of this group is placed on first bag of this frame.
14. method for stream processing as claimed in claim 12, wherein, construction step so makes up transport stream: the supplementary data stream bag that is placed on the predetermined portions of this group is placed on first bag of the field that constitutes this frame.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
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| US78870706P | 2006-04-04 | 2006-04-04 | |
| US60/788,707 | 2006-04-04 | ||
| US11/416,258 US7876750B2 (en) | 2006-04-04 | 2006-05-03 | Digital broadcasting system and data processing method thereof |
| US11/416,258 | 2006-05-03 | ||
| KR1020060066552A KR100793963B1 (en) | 2006-04-04 | 2006-07-14 | Digital broadcasting system and method for data processing |
| KR10-2006-0066552 | 2006-07-14 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800108870A Division CN101411188A (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
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|---|---|
| CN101697589A true CN101697589A (en) | 2010-04-21 |
| CN101697589B CN101697589B (en) | 2012-12-12 |
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| CN2009102058580A Expired - Fee Related CN101697588B (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CN2009102058595A Expired - Fee Related CN101697589B (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CN2009102058608A Expired - Fee Related CN101697590B (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CN2011103529475A Pending CN102387357A (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CNA2007800108870A Pending CN101411188A (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
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| CN2009102058608A Expired - Fee Related CN101697590B (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CN2011103529475A Pending CN102387357A (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
| CNA2007800108870A Pending CN101411188A (en) | 2006-04-04 | 2007-03-30 | Digital broadcasting system and data processing method thereof |
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| KR (1) | KR100793963B1 (en) |
| CN (5) | CN101697588B (en) |
| BR (3) | BRPI0710520A2 (en) |
| CA (3) | CA2684401C (en) |
| MX (1) | MX2008012802A (en) |
| WO (1) | WO2007114598A1 (en) |
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| CN105827416B (en) * | 2016-05-10 | 2019-03-05 | 中国农业银行股份有限公司 | A kind of data pack transmission method, sending ending equipment and receiving device |
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| US5727036A (en) * | 1995-11-22 | 1998-03-10 | Mitsubishi Semiconductor America, Inc. | High bit rate start code searching and detecting circuit and method |
| DE69943190D1 (en) * | 1998-03-02 | 2011-03-31 | Panasonic Corp | Method and device for the remote charging of a desired part of a continuous medium with increased accuracy |
| US6438145B1 (en) * | 1998-12-04 | 2002-08-20 | Koninklijke Philips Electronics N.V. | Transport packet distribution system and method using local header |
| KR20010018378A (en) * | 1999-08-19 | 2001-03-05 | 윤종용 | Apparatus for detecting sync of transport packet |
| US6889351B1 (en) * | 2000-03-30 | 2005-05-03 | Koninklijke Philips Electronics, N.V. | Backward compatible multiple data stream transmission method and system for compressed domain signals |
| KR100673419B1 (en) * | 2000-12-28 | 2007-01-24 | 엘지전자 주식회사 | Transmitting system and data processing method |
| CA2438138C (en) * | 2001-03-30 | 2007-03-13 | S. Merrill Weiss | Digital signal transmitter synchronization system |
| US7042949B1 (en) | 2001-04-03 | 2006-05-09 | Rosum Corporation | Robust data transmission using broadcast digital television signals |
| US7631340B2 (en) * | 2001-04-18 | 2009-12-08 | Lg Electronics Inc. | VSB communication system |
| US20030099303A1 (en) * | 2001-06-04 | 2003-05-29 | Koninklijke Philips Electronics N.V. | Digital television (DTV) transmission system using enhanced coding schemes |
| US6963612B2 (en) * | 2001-08-31 | 2005-11-08 | Stmicroelectronic, Inc. | System for detecting start codes in MPEG video streams and method of operating the same |
| JP3440092B1 (en) * | 2002-03-29 | 2003-08-25 | 松下電器産業株式会社 | Error correction decoding device and error correction decoding method |
| CN1679339B (en) * | 2002-09-06 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Packet insertion mechanism for an improved ATSC DTV system |
| KR100920738B1 (en) * | 2002-10-19 | 2009-10-07 | 삼성전자주식회사 | Apparatus and method for transmission of digital broadcasting system having different error correction coding process according to communication environment |
| EP1499135A3 (en) | 2003-07-18 | 2006-04-12 | Canon Kabushiki Kaisha | Digital data multiplexing and demultiplexing |
| CN1312929C (en) * | 2004-04-01 | 2007-04-25 | 清华大学 | Single-frequency network system of ground digital TV broadcast and its realizing method |
| US7920602B2 (en) * | 2005-05-23 | 2011-04-05 | Samsung Electronics Co., Ltd. | Method for formatting digital broadcast transport stream packet for improved receiving performance, digital broadcast transmitter, and signal processing method thereof |
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- 2006-07-14 KR KR1020060066552A patent/KR100793963B1/en active IP Right Grant
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2007
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- 2007-03-30 CN CN2009102058595A patent/CN101697589B/en not_active Expired - Fee Related
- 2007-03-30 EP EP07745728A patent/EP2008451A4/en not_active Withdrawn
- 2007-03-30 CN CN2009102058608A patent/CN101697590B/en not_active Expired - Fee Related
- 2007-03-30 BR BRPI0710520-7A patent/BRPI0710520A2/en not_active IP Right Cessation
- 2007-03-30 CA CA2684401A patent/CA2684401C/en not_active Expired - Fee Related
- 2007-03-30 BR BRPI0722369-2A patent/BRPI0722369A2/en not_active IP Right Cessation
- 2007-03-30 EP EP09173534A patent/EP2160034A3/en not_active Withdrawn
- 2007-03-30 WO PCT/KR2007/001565 patent/WO2007114598A1/en active Application Filing
- 2007-03-30 CA CA002644340A patent/CA2644340A1/en not_active Abandoned
- 2007-03-30 MX MX2008012802A patent/MX2008012802A/en active IP Right Grant
- 2007-03-30 CN CN2011103529475A patent/CN102387357A/en active Pending
- 2007-03-30 CN CNA2007800108870A patent/CN101411188A/en active Pending
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- 2007-03-30 EP EP09173540A patent/EP2159946A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN101697588B (en) | 2013-01-30 |
| MX2008012802A (en) | 2008-10-15 |
| BRPI0722370A2 (en) | 2011-08-16 |
| CA2644340A1 (en) | 2007-10-11 |
| CN101697590B (en) | 2013-09-25 |
| KR100793963B1 (en) | 2008-01-16 |
| EP2160034A3 (en) | 2013-01-30 |
| CN101697588A (en) | 2010-04-21 |
| BRPI0710520A2 (en) | 2011-05-10 |
| WO2007114598A1 (en) | 2007-10-11 |
| CN102387357A (en) | 2012-03-21 |
| CA2684993A1 (en) | 2007-10-11 |
| EP2008451A4 (en) | 2012-10-31 |
| CN101411188A (en) | 2009-04-15 |
| EP2160034A2 (en) | 2010-03-03 |
| BRPI0722369A2 (en) | 2011-08-16 |
| CN101697589B (en) | 2012-12-12 |
| KR20070099391A (en) | 2007-10-09 |
| EP2159946A2 (en) | 2010-03-03 |
| CA2684401C (en) | 2014-07-08 |
| CN101697590A (en) | 2010-04-21 |
| EP2008451A1 (en) | 2008-12-31 |
| EP2159946A3 (en) | 2012-10-31 |
| CA2684401A1 (en) | 2007-10-11 |
| CA2684993C (en) | 2012-06-05 |
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